From 1e8db5da84c3572b896fcf32c79a5ef115dc8ce6 Mon Sep 17 00:00:00 2001
From: James Riordon <jriordon@outofcontrol.ca>
Date: Tue, 25 Jul 2023 16:28:30 -0400
Subject: [PATCH] Add new config setting for minimum search length

---
 config/scout-fulltext-engine.php                   | 14 +++++++++++++-
 src/Parsers/Query/QueryParserMysqlFullTextBool.php |  6 ++++--
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/config/scout-fulltext-engine.php b/config/scout-fulltext-engine.php
index 7938a84..c60e891 100644
--- a/config/scout-fulltext-engine.php
+++ b/config/scout-fulltext-engine.php
@@ -37,6 +37,18 @@
         // it can be useful for tuning fulltext searches
         // !!! only supported with bind_mode = 'join'
         'add_select_score' => false,
+
+        /*
+        |--------------------------------------------------------------------------
+        | Default minimum search word length
+        |--------------------------------------------------------------------------
+        |
+        | This option controls the default minimum search word length. Be sure to match
+        | this to the length you have set in your MySQL / MariaDB configuration. The
+        | default value for the MySQL / MariaDB search word length is 4 characters.
+        |
+        */
+        'ft_min_word_len' => 3
     ],
 
 
@@ -48,7 +60,7 @@
             'parser' => QueryParserMysqlFullTextBool::class,
 
             // Extractors will extrapolate metadata from the query text
-         
+
             'extractors' => [
                 [
                     // useful to match dotted words
diff --git a/src/Parsers/Query/QueryParserMysqlFullTextBool.php b/src/Parsers/Query/QueryParserMysqlFullTextBool.php
index cefaf32..05e83e4 100644
--- a/src/Parsers/Query/QueryParserMysqlFullTextBool.php
+++ b/src/Parsers/Query/QueryParserMysqlFullTextBool.php
@@ -81,12 +81,14 @@ public function runExtractors(string $tmpQuery): Collection
 
     public function filterTokens(Collection $tokens): Collection
     {
-        return $tokens->map(function (string $word) {
+        $minlength = config('scout-fulltext-engine.fulltext_options.ft_min_word_len');
+
+        return $tokens->map(function (string $word) use ($minlength) {
             if (Str::contains($word, static::DEF_RESERVED_CHARS)) {
                 return '"' . trim(str_replace('"', ' ', $word)) . '"';
             } else {
                 return collect(preg_split("/[\\s[:punct:]]+/", $word))
-                    ->filter(fn ($s) => (strlen($s) > 2));
+                    ->filter(fn ($s) => (strlen($s) >= $minlength));
             }
         })->flatten();
     }